Zirconium(IV) bromide
Encyclopedia
Zirconium bromide is the chemical compound
with the formula ZrBr4. This colorless solid is the principal precursor to other Zr–Br compounds. It is prepared by the action of bromine
on zirconium
powder and purified by sublimation.
Its structure is polymeric with octahedral ZrBr6 centers. The structure can also be described as cubic close-packed, with one fourth of the octahedral
holes filled.
In the gas phase, ZrBr4 is tetrahedral.
Like related tetrahalides of Titanium
and Hf, ZrBr4 hydrolyzes in air to give oxy-halides, with release of hydrogen bromide
.
Chemical compound
A chemical compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances by chemical reactions. Chemical compounds have a unique and defined chemical structure; they consist of a fixed ratio of atoms that are held together...
with the formula ZrBr4. This colorless solid is the principal precursor to other Zr–Br compounds. It is prepared by the action of bromine
Bromine
Bromine ") is a chemical element with the symbol Br, an atomic number of 35, and an atomic mass of 79.904. It is in the halogen element group. The element was isolated independently by two chemists, Carl Jacob Löwig and Antoine Jerome Balard, in 1825–1826...
on zirconium
Zirconium
Zirconium is a chemical element with the symbol Zr and atomic number 40. The name of zirconium is taken from the mineral zircon. Its atomic mass is 91.224. It is a lustrous, grey-white, strong transition metal that resembles titanium...
powder and purified by sublimation.
Its structure is polymeric with octahedral ZrBr6 centers. The structure can also be described as cubic close-packed, with one fourth of the octahedral
Octahedron
In geometry, an octahedron is a polyhedron with eight faces. A regular octahedron is a Platonic solid composed of eight equilateral triangles, four of which meet at each vertex....
holes filled.
In the gas phase, ZrBr4 is tetrahedral.
Like related tetrahalides of Titanium
Titanium
Titanium is a chemical element with the symbol Ti and atomic number 22. It has a low density and is a strong, lustrous, corrosion-resistant transition metal with a silver color....
and Hf, ZrBr4 hydrolyzes in air to give oxy-halides, with release of hydrogen bromide
Hydrogen bromide
Hydrogen bromide is the diatomic molecule HBr. HBr is a gas at standard conditions. Hydrobromic acid forms upon dissolving HBr in water. Conversely, HBr can be liberated from hydrobromic acid solutions with the addition of a dehydration agent, but not by distillation. Hydrogen bromide and...
.